High-temperature-resistant composite film for packaging cooked food

Abstract

The utility model discloses a high-temperature resistant steamed food packaging composite film which comprises a composite film body, the composite film body comprises a printing layer used for providing product information and a decorative effect, and a fiber layer used for preventing the composite film body from deforming under the condition of high-temperature water is attached to the side face of the printing layer. A barrier layer used for blocking oxygen and water is attached to the side face of the fiber layer, a middle layer used for keeping out of light and preventing moisture is attached to the side face of the barrier layer, a base material layer used for ensuring that the composite film body is not prone to breakage or deformation under the high-temperature cooking condition is attached to the side face of the middle layer, and an inner layer used for making direct contact with food is attached to the side face of the base material layer; the food packaging bag can be in direct contact with food through the inner layer, has good food hygiene, does not contain substances harmful to the human body, is safer to eat, can completely keep out of light through the middle layer, prevents the food from being in contact with light and causing influence on the food inside, has the moisture-proof characteristic, and can effectively prevent the food from being affected with damp.

Description

Technical Field

[0001] The utility model relates to the technical field of composite films, in particular to a high-temperature resistant retorting food packaging composite film. Background Art

[0002] Because general composite films may crack or deform when packaging foods boiled in high temperature water, and the inner layer of the composite film needs to be in direct contact with the food, but the inner layer of some composite films does not have good food safety and may contain substances harmful to the human body. Some foods are not conducive to direct exposure to light, but some composite films cannot be completely protected from light when used, and general composite films may have poor moisture-proof performance, which may cause food to become damp and inedible, so further improvement is needed. Utility Model Content

[0003] The purpose of the present invention is to provide a high-temperature resistant composite film for food packaging in order to solve the problems raised by the above-mentioned background technology, thereby solving the problems raised by the above-mentioned background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-temperature cooking-resistant food packaging composite film, comprising: a composite film body, the composite film body comprising a printing layer for providing product information and decorative effects, a fiber layer for preventing the composite film body from deforming under high-temperature water conditions bonded to the side of the printing layer, a barrier layer for blocking oxygen and water bonded to the side of the fiber layer, an intermediate layer for avoiding light and moisture bonded to the side of the barrier layer, a substrate layer for ensuring that the composite film body is not easily broken or deformed under high-temperature cooking conditions bonded to the side of the intermediate layer, an inner layer for direct contact with food bonded to the side of the substrate layer, the printing layer, the fiber layer, the barrier layer, the intermediate layer, the substrate layer and the inner layer are bonded together by a hot pressing laminating machine to form a composite film body.

[0005] As a further solution of the present invention: the printing layer is suitable for using polyethylene terephthalate material.

[0006] As a further solution of the present invention: the fiber layer is suitable for being made of polypropylene fiber material.

[0007] As a further solution of the present invention: the barrier layer is suitable for being made of nylon material.

[0008] As a further solution of the present invention: the intermediate layer is suitable for using pure aluminum material.

[0009] As a further solution of the present invention: the substrate layer is suitable for using cast polypropylene material, and the thickness of the substrate layer is the thickest to support the strength of the composite membrane body.

[0010] As a further solution of the present invention: the inner layer is suitable for using polyethylene material.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model can directly contact with food through the inner layer, and has good food hygiene, does not contain harmful substances to the human body, and is safer to eat. The middle layer can completely avoid light, preventing food from coming into contact with light and causing the internal food to be affected. It also has moisture-proof properties, which can effectively prevent food from getting damp. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a partial structural diagram of the utility model;

[0015] Figure 3 It is a detailed structural diagram of the utility model;

[0016] Figure 4 It is a schematic diagram of the overall split structure of the utility model.

[0017] In the figure: 1, composite film body; 11, printing layer; 12, fiber layer; 13, barrier layer; 14, middle layer; 15, substrate layer; 16, inner layer. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or connected in an integral manner; they can be mechanically connected or electrically connected; they can be directly connected, indirectly connected through an intermediate medium, or they can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The following describes the embodiments of the present invention based on its overall structure.

[0020] Reference Figures 1 to 4 In an embodiment of the present invention, a high-temperature cooking-resistant food packaging composite film includes: a composite film body 1, the composite film body 1 includes a printing layer 11 for providing product information and decorative effects, a fiber layer 12 for preventing the composite film body 1 from deforming under high-temperature water conditions is laminated to the side of the printing layer 11, a barrier layer 13 for blocking oxygen and water is laminated to the side of the fiber layer 12, an intermediate layer 14 for avoiding light and moisture is laminated to the side of the barrier layer 13, a substrate layer 15 for ensuring that the composite film body 1 is not easily broken or deformed under high-temperature cooking conditions is laminated to the side of the intermediate layer 14, and an inner layer 16 for direct contact with food is laminated to the side of the substrate layer 15.

[0021] The printing layer 11 is suitably made of polyethylene terephthalate.

[0022] Using the above solution: the polyethylene terephthalate material can provide product information and decorative effects, while meeting certain heat resistance and boiling resistance, and can be used as a surface layer to better print product information.

[0023] The fiber layer 12 is suitably made of polypropylene fiber.

[0024] By adopting the above solution, the polypropylene fiber material is suitable for preventing the substrate layer 15 from deforming under high-temperature boiling conditions, thereby enhancing the high-temperature boiling resistance of the composite membrane body 1 and making the composite membrane body 1 more stable.

[0025] The barrier layer 13 is suitably made of nylon material.

[0026] Using the above solution: Nylon material can play the role of oxygen and water barrier, ensuring that food will not be corroded by external oxygen and moisture during the cooking process, effectively ensuring the quality of food.

[0027] The intermediate layer 14 is suitably made of pure aluminum.

[0028] Adopting the above solution: pure aluminum material has the characteristics of complete light-proof and moisture-proof, and can be used for packaging food that is boiled or steamed. It can also be vacuumed, and some foods that are not conducive to contact with light can also be used, and its uses are more extensive.

[0029] The substrate layer 15 is preferably made of cast polypropylene.

[0030] The above solution provides the main structural strength of the composite membrane body 1, ensuring that it is not easily broken or deformed under high-temperature cooking conditions, thereby ensuring the overall strength of the composite membrane body 1.

[0031] The inner layer 16 is suitably made of polyethylene material.

[0032] Adopting the above scheme: polyethylene material has good food hygiene and does not contain substances harmful to the human body. At the same time, corresponding auxiliary materials will be added according to the needs of the packaging products, such as anti-static, boiling, vacuum, inflation, increase in friction coefficient, etc.

[0033] The working principle of the present invention is as follows: the printing layer 11 can provide product information and decorative effects, while meeting certain heat resistance and cooking resistance. The fiber layer 12 is suitable for preventing the substrate layer 15 from deforming under high-temperature boiling conditions, thereby enhancing the high-temperature cooking resistance of the composite film. The barrier layer 13 can play the role of oxygen and water barrier, ensuring that the food will not be corroded by external oxygen and moisture during the cooking process. The middle layer 14 has the characteristics of complete light protection and moisture resistance, and can be used for food packaging that is boiled or steamed. It can also be vacuumed. The substrate layer 15 provides the main structural strength of the composite film body 1, ensuring that it is not easy to break or deform under high-temperature cooking conditions. The inner layer 16 directly contacts the food, has good food hygiene, and does not contain substances harmful to the human body. At the same time, the inner layer 16 will also add corresponding auxiliary materials according to the needs of the packaged product, such as anti-static, boiling, vacuum, inflation, and increased friction coefficient.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high temperature resistant retort food packaging composite film comprising: A composite membrane body (1), characterized in that the composite membrane body (1) includes a printing layer (11) for providing product information and decorative effects, a fiber layer (12) for preventing the composite membrane body (1) from deforming under high-temperature water conditions is bonded to the side of the printing layer (11), a barrier layer (13) for blocking oxygen and water is bonded to the side of the fiber layer (12), an intermediate layer (14) for avoiding light and moisture is bonded to the side of the barrier layer (13), a substrate layer (15) for ensuring that the composite membrane body (1) is not easily broken or deformed under high-temperature cooking conditions is bonded to the side of the intermediate layer (14), and an inner layer (16) for direct contact with food is bonded to the side of the substrate layer (15).

2. The high temperature resistant retort food packaging composite film according to claim 1, characterized in that: The printing layer (11) is suitably made of polyethylene terephthalate.

3. The high temperature resistant retort food packaging composite film according to claim 1, characterized in that: The fiber layer (12) is suitably made of polypropylene fiber material.

4. The high temperature resistant retort food packaging composite film according to claim 1, characterized in that: The barrier layer (13) is suitably made of nylon material.

5. The high temperature resistant retort food packaging composite film according to claim 1, characterized in that: The intermediate layer (14) is suitably made of pure aluminum material.

6. The high temperature resistant retort food packaging composite film according to claim 1, characterized in that: The substrate layer (15) is suitable for using cast polypropylene material.

7. The high temperature resistant retort food packaging composite film according to claim 1, characterized in that: The inner layer (16) is suitably made of polyethylene material.

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